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Question

An airtight box, having a lid of area 50 cm2 is partially evacuated. Atmospheric pressure is 1.01 × 105 Pa. To open the lid, net outward force should be equal to net inward force. If a minimum force of 500 N is required to pull the lid off the box. The pressure in the box was

50 cm2 क्षेत्रफल के ढक्कन वाले एक वायुरोधी बक्से को आंशिक रूप से निर्वातित किया जाता है। वायुमण्डलीय दाब 1.01 × 105 Pa है। ढक्कन को खोलने के लिए नेट बाह्य बल, नेट आन्तरिक बल के बराबर होना चाहिए। यदि बक्से के ढक्कन को ऊपर खींचने के लिए 500 N के न्यूनतम बल की आवश्यकता होती है, तब बक्से में दाब था

A
2.04 × 105 Pa
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B
103 Pa
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C
104 Pa
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D
1.1 × 105 Pa
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Solution

The correct option is B 103 Pa
Solution

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